Erm, it's just my ignorance on the entire subject really - how do they kill them when the do it properly? So far he just brings them to me and drops them, but this is after he's done his lap of honour with them in his mouth, hanging by the back. Someone told me that ruins them? Don't know mate, just have to ask! I'm not at all bothered about killing them myself but I do want to do it in the most humane way. Believe me, I've got three kids and used to be a vet nurse, there's very few things in this world that can make me squeemish